The second best stealth game ever, after Thief 2 metal age. I replay it every other year but even with TFix comunity patch it makes problems. I hope somebody is able to safe it and build in a windowed mode because on 4k its way to much scaled up to be fun. All the tips to run it in a window crash on my system sadly. For some years I even had a virtual computer installed to run it on a Win95.
To the game, a true stealth game not like modern variants with "stealth till fail then murder" Dishonered and co gameplay. Garret as a taciturn thief is great for this genre because when he opens his mouth its important.
From the levels Thief 1 is a bit more versatile then Thief 2 with tomb raiding, stealing goods, feeling and teaching people a lesson, jail breaks, to the moment you meet the plot and have a undercover missions in the mix.
The art direction is a steam\electronic-punk mix very unique with electric lights, torches and alarm systems. That thief 2 then turn in even more industrial revolution and steampunk later. Everything feels very early in electrification most parts fail or look experimental. Poor light the house still with candle while rich have some parts already lit up with lights Garret cant blow out.